CN107461541A

CN107461541A - Pipeline shutoff equipment

Info

Publication number: CN107461541A
Application number: CN201710070106.2A
Authority: CN
Inventors: 李伟强; 何俊耀
Original assignee: Hong Kong and China Gas Co Ltd
Current assignee: Hong Kong and China Gas Co Ltd
Priority date: 2016-06-03
Filing date: 2017-02-08
Publication date: 2017-12-12
Anticipated expiration: 2037-02-08
Also published as: GB2550998B; CN206889806U; CN107461541B; GB2550998A8; HK1216973A2; US20170350560A1; US10197222B2; GB2550998B8; SG10201700997SA; GB2550998A; GB201701965D0

Abstract

A pipe shut-off device (10) for use in a pipeline and performing an operation in response to incoming water, comprising at least two valves (100) mounted in pipes (P) of the pipeline. Each valve (100) includes a valve member (110) supported for movement between an open position when the valve (100) is opened to allow passage (Q) through the conduit and a closed position when the valve (100) is closed to close passage (Q) through the conduit. Further comprising a buoyancy member (200) associated with the valve member (110) for causing the valve member (110) to automatically move to its closed position in the event of water ingress in the vicinity of the buoyancy member (200). The valve members (110) are arranged in their closed position to act in respective upstream and downstream directions of passage through the pipe (P).

Description

Pipeline turns off equipment

The present invention relates to a kind of pipeline for being used in pipeline and operation being performed in response to water inlet to turn off equipment.

Background technology

Pipeline or piping network for conveying and supplying such as the gaseous fuel of urban medium or natural gas etc are typically Built in underground.In the event of accident (such as leakage caused by neighbouring underground job, especially rushing from rupture water pipe Strike waters damage caused by jet) or there is unexpected situation (such as soil/crustal movement and the rupture of pipe fitting Or fault state), then they can be easy into water.The underground water leaked into system is possible to can be quick downwards along pipeline The very long distance of diffusion.After leakage or fault state has been rectified and improved, these water will take an undesirably long time to remove.Carry The water of soil or dust etc. may reach and silt up the gas apparatus/device in client place, or it is caused to damage.

Currently, the measure for protecting or catering to underground piping water inlet is very rare or unpractical.

The present invention attempts to perform the brand-new of operation using and in response to water inlet in pipeline by providing a kind of or separately have Improved pipeline turns off equipment to alleviate or at least relax problems.

The content of the invention

According to the present invention, there is provided it is a kind of in pipeline using and in response to water inlet and perform operation pipeline shut-off set It is standby, including at least two valves in the pipeline of the pipeline.Each valve includes valve member, the valve structure Part be supported and when the valve be opened with allow through the open position of the passage of the pipeline with when the valve is closed Conjunction is moved with turning off through the closing position of the passage of the pipeline.Additionally include the buoyancy associated with valve member (buoyant) component, for occurring promoting the valve member to be automatically moved to it in the case of intaking near the buoyant member Closing position.These valve members be arranged in its closing position with the corresponding upstream of the passage through the pipeline and under Roam all around the would plays a role upwards.

Preferably, at least one be arranged in when moving to closing position from open position in valve member is moved Into the passage through the pipeline.

It is further preferred that at least one in valve member be arranged in its it is in an open position when avoid through The passage of the pipeline.

Preferably, at least one be arranged in valve member is initially moved from open position along linear path, with And then moved along nonlinear path to reach closing position.

Preferably, at least one in valve member has planar body, and be arranged in the open position with Through the direction of passage of the pipeline, mutually horizontal side upwardly extends, and in closing position with through the pipeline The side that the direction phase of passage is horizontal upwardly extends.

It is further preferred that the planar body of at least one valve member is arranged in and leading to through the pipeline Extend in the perpendicular constant angle in the direction in road.

Preferably, each valve member generally stays in open position, and is adapted to removing the water inlet When automatically return to open position.

Preferably, at least one valve member is connected to buoyant member, and its total weight by removable follower link It is to be supported by buoyant member.

In a preferred embodiment, shut-off equipment include pedestal, buoyant member is located at the lower section of the pedestal, so as to Moved up when floating on the water inlet, so as to promote connector thus to promote connector to move against the pedestal It is dynamic, and transfer to promote at least one valve member to be moved to closing position.

It is further preferred that at least one valve member is arranged to initially together with buoyant member from open position Move up, then, once promote connector to be then displaced outwardly against pedestal relative to buoyant member, and reach closure position Put.

It is further preferred that removable follower link includes valve member pivotly is connected into buoyant member, to enter At least one connecting rod gone relative to the movement of buoyant member.

It is further preferred that removable follower link includes two connecting rods, and it is arranged to form one and fitted It is made into the parallel linkages of the angle position of fixed valve component in the motion relative with buoyant member.

It is further preferred that at least one in the connecting rod or connecting rod has actuation part, the actuation part quilt It is arranged to be pushed against on pedestal, thus causes the motion of one or more of connecting rods, and transfers to cause valve member to enter Movement and arrival closing position of the row relative to buoyant member.

It is further preferred that actuation part is provided by the integral part of connecting rod or at least one connecting rod.

Preferably, pedestal has a supporting member, wherein connector floated over it is described enter buoyant member waterborne promote and against On the supporting, and the pedestal include being adapted to guiding float over it is described enter buoyant member waterborne movement guiding Part.

It is further preferred that buoyant member is to slidably engage with guiding piece, guiding is thus performed.

It is further preferred that buoyant member has floating body, the wherein floating body include being available for guiding piece in slidable engagement therewith with Guide the installed part of the buoyant member.

It is further preferred that the guiding piece includes multiple vertical tracks, and the installed part has to slide with track and nibbled The appropriate section of conjunction.

Preferably, the buoyant member has floating body, and the floating body, which includes, is available for connector to be pivotally connected to carry out and buoyancy structure The installed part of the relative movement of part.

Preferably, the valve includes corresponding valve seat, and corresponding valve member separates in open position from the valve seat, And engaged in closing position with the valve seat.

In a preferred embodiment, valve includes corresponding valve seat, wherein corresponding valve member from open position with Valve seat separates, and valve member engages in closing position with valve seat, and the valve seat is connected with pedestal.

It is further preferred that the valve seat is connected on the equiangular position around pedestal.

It is further preferred that the valve seat is adapted to the corresponding upstream and downstream opening position in the pipeline and the pipe Road is connected, and to provide immovable support for pedestal, and and then provides sliding support for buoyant member.

Preferably, the valve member of each valve and valve seat, which have, is used to be intermeshed with the corresponding close of closure valve Part is sealed, and at least one hermetic unit is equipped with one or more magnet, to attract with other hermetic unit magnetic, from And valve member is maintained at closing position.

In a preferred embodiment, the shut-off equipment is mounted with least two valves and buoyant member including inside Housing, the housing have at least two opening, for being attached in the pipeline, to face through the pipeline The upstream and downstream direction of passage.

It is further preferred that described be open includes or be equipped with the respective valve seat of valve, come for being cooperated with valve member (shut-off) is controlled to pass through the passage of each opening.

It is further preferred that each opening includes or is equipped with to connect for the corresponding pipeline connected in the pipeline Attach together and put.

It is further preferred that the housing has the main chamber for the part for serving as the passage through the pipeline, and wrap The bottom chamber being close in below main chamber is included, buoyant member and at least part of valve member is consequently adapted to and is collected into Water, and the buoyant member be arranged to it is initial float on collected water inlet, so as to by valve member from bottom chamber Remove, and finally promote valve member to be moved to closing position.

It can be opened it is further preferred that bottom chamber has to remove the bottom for the water inlet collected in bottom chamber.

Preferably, the shut-off equipment is the self-supporting unit for connecting and using in the pipeline.

Brief description of the drawings

The present invention is more particularly described now with reference to accompanying drawing and by example, wherein：

Fig. 1 is the perspective view according to one embodiment of the pipeline shut-off equipment of the present invention；

Fig. 2 is the perspective view of the shut-off equipment in Fig. 1, it is shown that the major part taken out from housing；

Fig. 3 is the side view of the shut-off equipment in Fig. 1；

Fig. 4 is the sectional view of the shut-off equipment in Fig. 3, and it is intercepted along lines IV-IV；

Fig. 5 is the front view of the shut-off equipment in Fig. 1；

Fig. 6 is the sectional view of the shut-off equipment in Fig. 5, and it is intercepted along lines VI-VI；

Fig. 7 is the perspective view of the major part of the shut-off equipment in Fig. 2；

Fig. 8 is the decomposition diagram of the major part of the shut-off equipment in Fig. 7；

Fig. 9 is another perspective view of the major part of the shut-off equipment in Fig. 2；

Figure 10 is the decomposition diagram of the major part of the shut-off equipment in Fig. 9.

Figure 11 is the buoyant member of shut-off equipment and the perspective view of pedestal in Fig. 2；

Figure 12 is the decomposition diagram of the buoyant member and pedestal in Figure 11；

Figure 13 and 14 is the front and rear perspective view of the valve member of the shut-off equipment in Fig. 2；

Figure 15 is the decomposition diagram of the valve member in Figure 13 and 14；And

Figure 16 to 20 is the cross-sectional front view of the shut-off equipment in Fig. 1, it is shown that operates shape from the order for being opened to closure Condition.

Embodiment

Referring first to Fig. 1 in accompanying drawing to 16, it is shown that a kind of pipeline shut-off equipment 10 for being used to implement the present invention, it is described Equipment uses in pipeline, and is intake in response to pipeline and perform operation.The pipeline laid is intended to give birth to combustion gas from combustion gas The holder of production factory and/or gas company is supplied in specific supply position or protected by shut-off equipment 10 regional Client.The shut-off equipment 10 includes at least two valves in the pipeline P of the pipeline, and for operating valve 100 Buoyant member 200.

Pipeline P has two adjacent sections P1 and P2, is connected with shut-off equipment 10 therebetween, the shut-off equipment 10 is ideally Positioned at pipeline P minimum position, or it is preferably in whole pipeline.Pipeline P is from the first section P1 to the second section P2's Direction, carry out delivery of fuel gas along the passage Q through its own on downstream direction, direction in contrast is then updrift side.

Preferably, two valves 100 have identical structure, and each of which valve all includes valve member 110, described Valve member is supported and is opening valve 100 to allow through the passage Q of pipeline open position (Fig. 7) and closure valve Door 100 is moved between passage Q closing position (Fig. 9) with turning off.Buoyant member 200 is associated with valve member 110, for working as The water leaked into pipeline P promotes valve member 110 to occur what is intake near the buoyant member 200 when increasing to enough amounts In the case of be automatically moved to its closing position.

Valve member 110 in the opposite direction, and is arranged in its closing position in the passage Q through pipeline P Corresponding upstream and downstream direction on play a role, thus, shut-off equipment 10 can in the opposite direction by using two valves Door 100 turns off pipeline P.This realizes effective sealing.

Buoyant member 200 can use a variety of possibility modes for relative motion associated with valve member 110, so as to Promote or cause valve member 110 to move.In this embodiment, each valve member 110 is by accordingly may be used Mobile link part 300 is connected to buoyant member 200, and especially, its whole weight is supported or undertaken by buoyant member 200 's.

The specific configuration of the shut-off equipment 10 in the specific embodiment is will be described in now.The shut-off equipment 10 has interior The housing 500 that portion is provided with valve 100 and buoyant member 200 (is made, such as polyethylene or casting of any appropriate material Iron).The housing 500 has the relative left and right cylinder open 501 and 502 for each acting as entrance and exit, in pipeline P In with towards through pipeline P passage Q upstream and downstream direction connect.The opening 501 and 502 includes employing accordingly The pipe engagement device of monoblock type edge (integral rim) 501R and 502R form, and equipment 10 is turned off then by described Device connect or the pipeline P that is bonded between pipe section P1 and P2 in for using.The housing 500 includes equally being cylinder Upper and lower part opening 503 and 504.

Internally, housing 500 defines the main chamber 510 for serving as the part through pipeline P passage Q, and adjacent Below main chamber 510 and contain the bottom chamber 520 of buoyant member 200 and at least part of valve member 110.It is described Main chamber 510 has roughly cylindrical shape, its in the axial direction with inlet/outlet on opposite sides thereof or upstream/under Trip opening 501 is mutually calibrated with 502 and has identical section size or overlay area (footprint), is thus collectively forming Linear penetrating via Q.Bottom chamber 520 is then close in passage Q lower section.

Each valve member 110 has circular planar body, and has connector 111 at the center at its back side. Each valve 100 includes being used for the valve seat 120 to cooperate with associated valve member 110, and valve member 110 is in open position Put from valve seat 120 and separate, and be engaged with closing position.Valve seat 120 has circular structure, and including a short cylindrical The base portion collar 121 of shape, the collar is attached thereto by inserting corresponding upstream/downstream opening 501/502, or is located at Face the inner side of the opening 501/502 of the main chamber 510 of housing 500.

In general, valve seat 120 is adapted to be connected and locate with pipeline P in pipeline P corresponding upstream and downstream position Portion in the inner.Two valve seats 120 are relative to each other in the opposite direction for diametrically crossing over housing main chamber 510.Upstream and downstream Opening 501 and 502 includes or is equipped with the respective valve seat 120 of valve 100, is cooperated with will pass through with valve member 110 to control Make and be especially off the passage Q through each opening 501/502.

Each valve member 110 and associated valve seat 120 have corresponding generally planar hermetic unit Or surface, namely leaned on each other with will pass through intermeshing to close associated valve 100.In order to strengthen sealing effectiveness, The hermetic unit of each valve member 110 at least one or specific embodiment in hermetic unit is equipped with annular Series connection magnet 112 (or annular magnet).Magnet 112 provides the magnetic attracting force with other hermetic units of valve seat 120, with Just valve member 110 is more firmly kept or maintained closing position when valve 100 closes.

Bottom chamber 520 contains buoyant member 200, and is arranged to the water collected and leaked into pipeline P.Main chamber 510 can enter via upper opening 503 and from the outside of housing 500, and the upper opening 503 (does not show generally by rounded cap Go out) close or seal.Bottom chamber 520 is provided by the space inside under shed 504, and be to a greater extent by What the cavity of the cylindrical cap 521 as lowermost portion and from bottom closure lower openings 504 provided.The cap 521 can be with It is connected through a screw thread, is opened by bolt or by welding (as in the embodiments described) or epoxy resin with bottom Mouth 504 is fixed together.If it is desired, cap 521 can also be detachable or removable, thus exclude in bottom chamber The water collected in 520, or for maintenance purposes.

Bottom chamber 520 is the minimum part of housing 500, and positioned at pipeline P most under position, or preferred position In whole pipeline, the result is that the water leaked into any position in pipeline all flow ipe P and can be collected in bottom chamber In 520.Buoyant member 200, which is arranged to, to be floated in bottom chamber 520 on the water inlet of initial collection, so as to by valve member 110 remove bottom chamber 520, and finally promote valve member 110 to be moved to closing position.

Buoyant member 200 has roughly cylindrical floating body 210, and the installed part including being fixed on floating body 210 220.Floating body 210 can be made of hollow plastic construction or by polystyrene material.Installed part 220 has with coaxial side The vertical axostylus axostyle 221 that formula projects upwards from floating body 210, and the horizontal gird 232 including intersecting with axostylus axostyle 221.Axostylus axostyle 221 Upper end is thus, removable to connect to be pivotally connected removable follower link 300 formed with about a pair horizontal-extending holes 222 Fitting 300 is transportable for buoyant member 200.Every one end in the relative left end and right-hand member of crossbeam 223 The form of vertically extending midget tube 224 is all manufactured into, for use in the vertical movement of guiding buoyant member 200.

Each removable follower link 300 includes two connecting rods, the first and second connecting rods 310 and 320, and the two Corresponding valve member 110 can be pivotally attached to buoyant member 200 by connecting rod, to carry out the fortune relative to buoyant member 200 It is dynamic.Connecting rod 310 is connected with 320, and its inner is respectively hinged to hole 222 up and down of installed part 220, and its outer end is hinged to The corresponding hole up and down of the center back connector 111 of valve member 110.

Two connecting rods 310 are arranged with 320 and joint forming is into parallel linkages (or parallelogram linkage dress Put), the linkage is adapted to the angle position of the fixed valve component 110 in the motion relative to buoyant member 200.By In parallel linkages to be turned into, two connecting rods 310 and 320 have equal length and extended in a manner of being parallel to each other, by This, valve member 110 can pivot on the constant angular position relative with buoyant member 200.

In the case where buoyant member 200 is held upright, namely has vertical central axis, in moving process In, buoyant member 200 can keep all constant dwell of valve member 110 in the upright position relative with buoyant member 220.One As for, be mounted to for use when, all these three components 200 and 110 all can be in the course of the work or quiet Only extended vertically under state.

By way of parenthesis, the upper end of the first connecting rod 310 of each removable follower link 300 has an overall extension, Wherein the extension is stretched out with about 70 ° of angle from the main body of connecting rod 310 and serves as actuation part 311, wherein as described below, Removable follower link 300 is configured to mobile by the actuation part or moved.

Turning off equipment 10 also includes the pedestal 400 with the main body 410 similar to horizontal rectangular framework, and buoyant member 200 are disposed below.When on the water inlet collected in the bottom chamber 520 for swimming in housing 500, the buoyant member 200 can gradually move up, and removable follower link 300 thus finally be promoted against pedestal 400, so as to promote connector 300 to send out Raw movement, and and then promote valve member 110 to be moved to closing position.

Pedestal 400 has the horizontal pin 420 of two planes for extending through the main body 410 in the opposite end of main body 410. Each pin 420 act as a supporting member, wherein corresponding removable follower link 300 is floated over housing bottom chamber 520 In water inlet on and rise the backup of buoyant member 200 on the supporting.

Pedestal 400 includes the guiding piece provided by a pair of vertical rails 430, wherein phase of the vertical track from main body 410 Opposite end extends downwardly, and is adapted to guide the up and down motion of buoyant member 200.More specifically, track 430 extends through The corresponding pipe fitting 224 of installed part 220, so that the pipe fitting 224 slidably engages with corresponding track 430 along the track 430.Pass through This arrangement, whole buoyant member 200 all slidably engage with track 430, to be that guiding piece guides by track 430, by This rises on collected water inlet, or as water inlet declines together when water inlet is discharged.

Pedestal 400 is connected between valve seat 120 and crosses over valve seat 120, thus the equiangular position around pedestal 400 Valve seat 120 is connected with pedestal 400 on (the diametrically relative position namely in present case).

By being fixed positioned on the upstream open 501 and downstream opening 502 of housing 500, it is fixed positioned on entirely turning off The relative pipeline P of equipment 10 corresponding upstream and downstream position, valve seat 120 can be that the pedestal 400 of connection therebetween provides not Moveable support, and and then provide sliding support for buoyant member 200.

The operation of shut-off equipment 10 is described referring now to Figure 16 to 20.

In initial normal condition (Figure 16), buoyant member 200 is located under gravity together with valve member 110 In extreme lower position.Each valve member 110 all is at open position, and is entirely localized under the main chamber 510 of housing 500 Side simultaneously departs from main chamber room 510, is hindered thus without being formed to the fuel gas flow along the passage Q through pipeline P.

In the event of unexpected or unexpected water inlet, for example originating from the rupture foggara for having damaged neighbouring part pipeline Impact the water inlet of water jet, then the water of leakage or infiltration pipeline will enter shut-off equipment 10, and be collected in housing 500 Bottom chamber 520.With the accumulation of the water in bottom chamber 520, the water constantly risen will reach buoyant member 200 and make it It is subjected to displacement, thus, buoyant member 200 can be floated on the water inlet collected in bottom chamber 520 and together with the water inlet of collection Rise.

(Figure 17) in this case, once water W enters pipeline P and is collected among the bottom chamber 520 of housing, then Buoyant member 200 can be begun to ramp up when swimming on the water inlet W constantly risen, and thus will can be supported thereon Each valve member 110 is lifted in main chamber 510.Once lasting rise, then, valve member 110 is connected to buoyant member 200 removable follower link 300 can make the actuation part 311 of its first connecting rod 310 engage the fulcrum post 520 of upper susceptor 400 (Figure 18).

From this moment, connector 300 is pushed against on pedestal 400 by buoyant member 200.So doing will cause to connect Part 300 is pivoted up moving, and thus then valve member 110 can be made relative with buoyant member 200 towards closing position progress It is displaced outwardly or pivots (Figure 19).

Finally, all valve members 110 can all press corresponding valve seat 120, and reach its closing position, so as to turn off Through pipeline P passage Q (Figure 20), to terminate the sprawling of the flowing of combustion gas and water inlet along pipeline P or pipeline.

It will be terminated by means of passage Q fuel gas supply.What is more important, the valve 100 of closure will seal The client of the pipe downstream for the shut-off equipment 10 tumbled one, thus protected from leaking into water in supply side pipe line Infringement.

Shut-off equipment 10 is designed to cause valve member 110 to reach and is supported in respective valve seat 120, that is to say, that Two all valves 100 can all close before bottom chamber is fully filled with into water.This design avoid or minimizes The diffusion intake from the leakage side of shut-off equipment 10 to relative non-leakage side.

Under gravity, valve member 110 generally stays in open position, and once removes into water, then It will automatically return to open position after running.

In whole operation, valve member 110 is arranged in the open position in the side with the passage Q through pipeline P Upwardly extend to mutually horizontal side, and equally upwardly extended in closing position in the horizontal side of the direction phase with passage Q.Valve The planar body of door component 110 is arranged in operation or extended with constant angle in inactive state, that is, Rest on the upright position perpendicular with the horizontal direction of the passage Q through pipeline P.

In brief, because valve member 110 is supported or carried by buoyant member 200, therefore, valve member 110 It is arranged to initially as floating member 200 moves up from open position, then, once its connector 300 is pushed against pedestal On 400, then it will be displaced outwardly relative to floating member 200 and reach closing position.Connector 300 is arranged to it Actuation part 311 is pushed against on pedestal 400, so that connecting rod 310 and 320 carries out angle movement, and transfers to cause valve member 110 carry out the pivot movement relative with buoyant member 200 and reach closing position.It should be noted that valve member 110 is by cloth Be set to and initially moved since open position along linear path, that is, move vertically upward, then, its by upwards and to Moved when outer pivot along nonlinear path, thus reach closing position.

Repaired leakage, the pipe section for for example repairing or having changed the damage in pipeline and/or accessory (such as connect Head) after, shut-off equipment 10 should be reset, so that preparation recovers the supply through passage Q.It is internal in order to reset shut-off equipment 10 The water of collection should be discharged and valve 100 will be switched on again.

Shut-off equipment 10 in described embodiment is two-way, because two valve members 110 have been installed in phase On anti-direction, to turn off corresponding upstream and downstream direction or path through pipeline P passage Q.Gas supply can quilt Switch to the either direction in two opposite directions, such as the side of (namely opposite with direction Q) opposite with passage Q To the operation without influenceing shut-off equipment 10.

By turning off pipeline P in the opposite direction and can be carried by using two valves 100, the shut-off equipment 10 For the processing of effective water blockoff.

In the case where water entry pressure is too high, facing the valve member 110 of inflow direction possibly can not well keep, still Facing another valve member 110 at the back side should be held off, and water inlet thus can be stopped at housing 500.Because water comes from The back side of another valve member 110, therefore, its pressure will act on the back side of another valve member 110, and can make It is more firmly pressed against on associated valve seat 120.This is also a major advantage of the shut-off equipment of the present invention.

The shut-off equipment of the present invention introduces more than one valve or at least two valves extend to conduct to turn off It is mounted with to turn off the position at the abutment of equipment 10 or all passages, path or the branch that extend since the position (i.e. Pipe section).Each abutment should have at least two branches, namely for the upstream for the flow for flowing to the abutment Branch and the downstream branch of the flow flowed out from the abutment.As the situation in preferred embodiment as described above, this Kind situation is a simplest system.Downstream branch is incorporated to more than two branch being present, for example existing to contain Under the situation of three branches of two upstream branch, three valves can be included according to the applicable shut-off equipment of the present invention.Institute First and second valves of installation are used to respectively turn off two upstream branch (i.e. pipe section), and the 3rd installed Valve is used to turn off downstream branch.

Finally, the shut-off equipment 10 is the self-supporting unit for connecting and using in pipeline P.

The present invention is merely possible to what example provided, and is not departing from the invention scope of accessory claim defined In the case of, those skilled in the art can carry out other various modifications and/or replacement to described embodiment.

Claims

1. a kind of pipeline shut-off equipment for being used in pipeline and operation being performed in response to water inlet, including：

At least two valves, it is arranged in the pipeline of the pipeline, and each valve includes valve member, the valve member Be supported and when the valve be opened with allow through the open position of the passage of the pipeline with when the valve is closed Moved with turning off this through the closing position of the passage of the pipeline；And

Buoyant member, it is associated with the valve member, for occurring promoting the valve in the case of intaking near the buoyant member Door component is automatically moved to its closing position；

Wherein, the valve member be arranged in its closing position with the corresponding upstream of the passage through the pipeline and under Roam all around the would plays a role upwards.

2. shut-off equipment as claimed in claim 1, wherein, at least one in the valve member is arranged in from the opening Position is moved to when moving to the closing position in the passage that this passes through the pipeline.

3. shut-off equipment as claimed in claim 2, wherein, at least one in the valve member is arranged in that it is in should The passage for passing through the pipeline is avoided when open position.

4. shut-off equipment as claimed in claim 1, wherein, at least one in the valve member is arranged in initially from this Open position is moved along linear path, and is then moved along nonlinear path to reach the closing position.

5. shut-off equipment as claimed in claim 1, wherein, at least one in the valve member has planar body, and It is arranged in the open position and is being upwardly extended with this through the horizontal side of the direction phase of the passage of the pipeline, Yi Ji Upwardly extended in the closing position with this through the horizontal side of the direction phase of the passage of the pipeline.

6. shut-off equipment as claimed in claim 5, wherein, the planar body of at least one valve member is arranged to Extend in the perpendicular constant angle in the direction for the passage that the pipeline is passed through with this.

7. shut-off equipment as claimed in claim 1, wherein, each valve member generally stays in the open position, and Each valve member is adapted to automatically return to the open position when water inlet is removed.

8. the shut-off equipment as described in any claim in claim 1-7, wherein, at least one valve member is by can Mobile link part is connected to the buoyant member, and its total weight is supported by the buoyant member.

9. shut-off equipment as claimed in claim 8, wherein, the shut-off equipment includes pedestal, and the buoyant member is located at the base The lower section of seat, to be moved up when floating on the water inlet, so as to promote the connector against the pedestal, Thus promote the connector to move, and transfer to promote at least one valve member to be moved to the closing position.

10. shut-off equipment as claimed in claim 9, wherein, at least one valve member is arranged to initially floating with this Power component moves up from the open position together, then, once the connector is promoted against the pedestal, then relative to the buoyancy Component is displaced outwardly, and reaches the closing position.

11. shut-off equipment as claimed in claim 9, wherein, the removable follower link includes at least one connecting rod, it is described at least The valve member is pivotly connected to the buoyant member by one connecting rod, to carry out the movement relative to the buoyant member.

12. shut-off equipment as claimed in claim 11, wherein, the removable follower link includes two connecting rods, the company Bar is arranged to form parallel linkages, and the parallel linkages are adapted in the motion relative with the buoyant member solid The angle position of the fixed valve member.

13. shut-off equipment as claimed in claim 11, wherein, it is at least one with cause in the connecting rod or the connecting rod Dynamic part, the actuation part, which is arranged to, to be pushed against on the base, thus causes the motion of one or more of connecting rods, And transfer to cause valve member progress relative to the movement of the buoyant member and reach the closing position.

14. shut-off equipment as claimed in claim 13, wherein, the actuation part is by the connecting rod or at least one connecting rod Integral part provides.

15. shut-off equipment as claimed in claim 9, wherein, the pedestal has supporting member, and wherein the connector is floated over described Enter the buoyant member waterborne to promote against on the supporting, and the pedestal includes guiding piece, and the guiding piece is fitted Be made into guiding float over it is described enter the buoyant member waterborne movement.

16. shut-off equipment as claimed in claim 15, wherein, the buoyant member slidably engages with the guiding piece, thus performs Guiding.

17. shut-off equipment as claimed in claim 15, wherein, the buoyant member has floating body, and the floating body includes installed part, should Installed part is slidably engaged to guide the buoyant member with the guiding piece.

18. shut-off equipment as claimed in claim 17, wherein, the guiding piece includes multiple vertical tracks, and the installation Part has the appropriate section slidably engaged with the track.

19. shut-off equipment as claimed in claim 8, wherein, the buoyant member has floating body, and the floating body includes installed part, institute Installed part is stated to be pivotally connected with the connector to carry out the movement relative with the buoyant member.

20. the shut-off equipment as described in any claim in claim 1-7, wherein, the valve includes respective valve seat, should Respective valves component is separated in the open position from the valve seat, and the valve member is nibbled in the closing position and the valve seat Close.

21. shut-off equipment as claimed in claim 9, wherein, the valve includes respective valve seat, and the corresponding valve member is at this Open position separates from the valve seat, and the valve member engages in the closing position with the valve seat, the valve seat and the pedestal It is connected.

22. shut-off equipment as claimed in claim 21, wherein, the valve seat is connected on the equiangular position around the pedestal.

23. shut-off equipment as claimed in claim 21, wherein, the valve seat be adapted in the corresponding upstream of the pipeline and Downstream position is connected with the pipeline, to provide immovable support for the pedestal, and and then is the buoyant member Sliding support is provided.

24. shut-off equipment as claimed in claim 20, wherein, the valve member and the valve seat of each valve, which have, to be used In intermeshing to close the corresponding hermetic unit of the valve, and at least one hermetic unit is equipped with one or more magnetic Iron, to attract with other hermetic unit magnetic, so as to which the valve member is maintained at into the closing position.

25. the shut-off equipment as described in any claim in claim 1-7, wherein, the shut-off equipment includes internal install The housings of at least two valves and the buoyant member, the housing have at least two openings, and the opening is used for described It is attached in pipeline, to face this through the upstream and downstream direction of the passage of the pipeline.

26. shut-off equipment as claimed in claim 25, wherein, described be open includes or is equipped with the respective valve seat of the valve, The passage that the valve seat is used to cooperate with the valve member to control (shut-off) to pass through each opening.

27. shut-off equipment as claimed in claim 25, wherein, each opening includes or is equipped with the pipeline The corresponding pipeline engagement device of middle connection.

28. shut-off equipment as claimed in claim 25, wherein, the housing has the one of the passage for serving as this through the pipeline Partial main chamber, and the bottom chamber including being close in below the main chamber, it is consequently adapted to the buoyant member and at least The partial valve member simultaneously collects water inlet, and the buoyant member be arranged to it is initial float on collected water inlet, So as to which the valve member is removed from the bottom chamber, and the valve member is finally promoted to be moved to the closing position.

29. as claimed in claim 28 shut-off equipment, wherein, the bottom chamber has bottom, the bottom be it is openable, with For removing the water inlet collected in the bottom chamber.

30. shut-off equipment as claimed in claim 25, wherein, the shut-off equipment is self-supporting unit.The self-supporting unit is used for Connect and use in the pipeline.